[distcc] Compilation of distcc 2.16 under cygwin fail

[Perochon Sebastien]

The compilation of distcc 2.16 under cygwin fail:

src/dparent.o(.text+0x1a3): In function `dcc_log_child_exited':
/cygdrive/d/cygwin/distcc/src/dparent.c:157: undefined reference to
`_WCOREDUMP'

As done in the file "exec.c", the following code must be added:

/* You can't have core files on Windows. */
#ifndef WCOREDUMP
#  define WCOREDUMP(status) 0
#endif

Sebastien.